Plasma monitoring of plasma-assisted nitriding of aluminium alloys

Quast, M.; Mayr, P.; Stock, H.‐R.

doi:10.1016/s0257-8972(99)00497-1

Cited by 16 publications

(5 citation statements)

References 11 publications

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“…Hence, the molecular ions N + 2 and the fast atom N f are thought to be the main active species participating in the cathode reaction process. Quast et al [28] have also investigated the energy distributions of nitrogen ions (N + 2 , N + ) at the cathode of nitrogen dc glow discharge in the plasma-assisted nitriding process of aluminium alloys by plasma monitoring. Their experimental results of the ion energy distributions are in general agreement with our simulated results, both of which demonstrate that the major ions reaching the cathode are the molecular ions and the energy distribution of molecular ions is dominated by low energetic ions while the energy distribution of atomic ions is dominated by the higher ones.…”

Section: Resultsmentioning

confidence: 99%

Monte Carlo simulation of fast electrons and heavy particles in the CDS of nitrogen dc glow discharge

Zhang

Wang

et al. 2001

J. Phys. D: Appl. Phys.

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The characteristics of fast electrons (e-) and heavy particles (N2+, N+, N2f, Nf) in the cathode dark space (CDS) of nitrogen dc glow discharge are simultaneously studied by Monte Carlo simulation. The calculated energy and angular distributions of these particles at different positions from the cathode provide a clear picture of their transport behaviours within the CDS. The density and mean energy of these particles indicate that the electrons and the atomic ions (N+) are the main high-energy species and the molecular ions (N2+) are the major ions in the CDS. It can be seen from the energy distributions of the bombarding particles at the cathode surface that the molecular ions and the fast atoms (Nf) are the main active species participating in the cathode nitride material synthesis process. The influence of the backscattering of the electrons from the negative glow to the CDS is also investigated. All the calculated results provide good information on the spatial characteristics of the particles considered in this paper and also their internal connections in the CDS of nitrogen dc glow discharge.

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Section: Resultsmentioning

confidence: 99%

Monte Carlo simulation of fast electrons and heavy particles in the CDS of nitrogen dc glow discharge

Zhang

Wang

et al. 2001

J. Phys. D: Appl. Phys.

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“…The diffusion processes are important for the treatment technology performed on these Tiand Al-based alloys, which consequently leads to the formation of phases that strengthen the surface layer. In the case when their surface is nitrided, this process is usually carried out in N 2 [57,58], N 2 -H 2 [59,60], and NH 3 -Ar atmospheres [61,62]. While the role of nitrogen is obvious, the effect of hydrogen has been explained in various ways.…”

Section: Titanium and Aluminum Alloysmentioning

confidence: 99%

DLC Layers Created Using CVD Techniques and Their Application

Januś¹

2019

Chemical Vapor Deposition for Nanotechnology

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One way to obtain new materials with different properties is to modify existing ones to improve their inadequate properties. Due to the fact that many useful properties of materials, including resistance to wear and corrosion, coefficient of friction and biocompatibility, depend on the state of the surface, modern methods of surface engineering are particularly useful. They include the deposition of layers with a matching chemical composition and structure. In terms of applications, the most suitable seem to be amorphous or nanocrystalline layers containing carbon, nitrogen, silicon and hydrogen. They combine the advantageous properties of silicon carbide SiC and silicon nitride Si 3 N 4 and thus have a strong resistance to oxidation at high temperatures, high modulus of elasticity, low coefficient of friction and wear resistance. However, the silicon carbonitride compound is not thermodynamically stable under normal conditions and therefore must be obtained as a result of unconventional synthesis. One of these methods is chemical vapor deposition (CVD), including the most widely used plasma-assisted chemical vapor deposition (PACVD) techniques. The materials obtained, thanks to these techniques, have found and are still finding wider and wider application in many branches of industry and medicine.

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“…Quast et al 33 carried out investigations on the application of plasma assisted nitriding to industrial aluminium parts. Crucial points were the uniformity of the temperature in the batch and the surface quality.…”

Section: Plasma Nitriding Of Aluminium Alloysmentioning

confidence: 99%

Surface engineering of aluminium and titanium alloys: An overview

Spies

2010

Surface Engineering

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The ever-increasing demands for higher performance, weight reduction and more challenging application conditions have been the main driver for substituting steel and cast iron components with those made from light metals. However, aluminium and titanium alloys are characterised by a poor tribological behaviour, which has been a severe barrier to tribological applications. This shortcoming can be overcome by means of load, material and component specific surface engineering. This paper overviews surface engineering processes currently used for protection of aluminium and titanium components against wear including nitriding, laser gas alloying, electron beam surface alloying and duplex surface engineering.

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Plasma monitoring of plasma-assisted nitriding of aluminium alloys

Cited by 16 publications

References 11 publications

Monte Carlo simulation of fast electrons and heavy particles in the CDS of nitrogen dc glow discharge

Monte Carlo simulation of fast electrons and heavy particles in the CDS of nitrogen dc glow discharge

DLC Layers Created Using CVD Techniques and Their Application

Surface engineering of aluminium and titanium alloys: An overview

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